Overhead trolley or collector for electric tramway and railway vehicles



, T. BLANEY AND u. WILLIAMS. O VERHEA'D TROLLEY 0R COLLECTOR FOR ELECTRIC TRAMWAY AND RAILWAY VEHICLE-S.

APPLICATION FILED IUNE 6,1921. 1,393,939. Patented Oct. 18, 1921 2 SHEETS-SHEET l.

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T. BLANEY AND n'. wxLuAMs. l OVERHEAD TROLLEY OR COLLECTOR FOR ELECTRIC TRAMWAY AND RAILWAY VEHICLES.A

' APPLICATION FILED JUNE 6.1921. 11,393,939. Patented Oct. 18, 1921.

2 SHEETS-SHEET 2.

77zopzas BZwz cy' javac] M//fl/NS UNITED .STATES PATENT OFFICE.

THOMAS ELANEY 'AND DAVID-WILLIAMS, o'E WALTON, LIVERPOOL, ENGLAND,

ASSIGNORS OF ONE-HALE TO THE PANY, 0F LONDQN, ENGLAND. l

EQUIPMENT AND ENGINEERING COM- vovEEII-EAD TROLLEY VOE ,coELEc'roE EOE ELECTRIC TEAMWAY AND RAILWAY l1 ,i393 ,939. n

'hpiplircationiileid June 6,

head wire, thus reducing'the'liability ofthe N trolley leaving the wire."

Y vThe invention isAV characterized'in that the trolley head in'which the trolley pulley is journaled and `which-is pivoted to the trol* A ley head socket, iis'p'rovided-A lower down with a curved. arm which. 'bearsiagainst ,a

spring contained within Aa :curved tubular extension chamber projecting` downwardly from the under 'side 'of'the trolley head Vsocket yso asv to support the trolley pulley socket'in normal. position while admitting oit yielding a little-when the trolley strikes an'obstruction. i n u u.

In the accompanying drawingste`"V Figure l is a side elevationpartly. in section Vof the trolley head V'c'ompl'ete'of 'the type having a Socket in which the pillar of ver* tical fork of the trolley pulley swivels,

Fig. 2 is a rear view of the trolley head, Fig. 3 is a plan view thereof,

Fig. 4L is a side elevation of a trolley hea of the type in which the trolley is journaled in a fork pivoted to the trolley head socket which fork is not arranged to swivel as in Fig. 1,

Fig. 5 is a plan view thereof.

Referring first to Figs. l, 2 and 3, A is the trolley head in which the pillar B of the vertical fork C swivels. This head A has a web member D projecting forwardly and upwardly from it, and it terminates at one point adj acent to the trolley in a guard piece E which prevents any danger of the span or other wire getting between or catching between the trolley F and the web D of the head A, while at another point this web Specication of Letters atent.

VEHICLES. v

Vratearea oet. 18', 1921.

1921; serial No. 475,400.

member has an ear piecek F which enters between two'ja'ws Gr projecting longitudinally from the end of the socket H of the trolley head, and is pivoted thereto by the hinge pin I, so that'the'head A (which carries the fork and trolley) is vcapable of berngrdepressed in a vertical plane which co- Incides-with that of the trolley pole. The web D has a curved extension arm J projecting :forwardly from it, and enters a curved tubular chamber K which projects downwardly from the under side oli the trolley head socket H, the radius of the curved chamber K coinciding with that of the curved arm J, Yboth being struck from the same center namely the hinge pin I. In this chamber K is provided a spiral spring L which acting 'upon a shoulder M on the arm J, holds'the socket with the fork spindle and trolley in' a position approximately atl-right angles, to the axis of the trolley pole'. The trolleytherefore as it rolls along the overhead wire,'rencounters thev joints that secure theoverhea'd conductor to the span w1res,"or the 'frogs or other obstructions, and the trolley will at onceyield andV be thrownor turned rearwardly on its hinge vpin Tout of the normal position shown in Fig. and the spring Lbe compressed. Thejspring L, will thus absorb the sudden jar-"or shockofthe obstruction, reduce noise, 'and the liabilityy of the ,trolley leaving the conductor. The trolleyimmediately it'recovers from the sudden jar or shock of encountering the obstruction, will return to its normal position again. The ear piece F is formed at one part (that is above the axis of the trolley head socket H) with a nose piece or abutment N which abuts against the base of the space between the two jaws G, and while Oifering no obstruction to the trolley being turned downwardly or depressed on its pivot I, absolutely prevents .the collar or shoulder M or the spring L coming out of the chamber K. The trolley head A that the fork spindle B swivels in, is provided with a hole O in which lits a pin engaging a groove in the fork spindle B so as to allow the spindle to revolve but prevent it coming out of the socket. The construction of the trolley head is according to this invention simplified, the liability of sparking is brought down to a minimum l()r v socket I-I and is pivoted thereto by the hinge owing to the fact that the spring enables the trolley to give somewhat, when it meets an obstruction or unevenness in the wire, and furthermoreV only a very moderate spring tension is required on the pole.

Referring now to Figs. l and 5, P is the trolley head or fork in which the trolley is mounted, and this head has an earpiece F at one end whichV enters between two jaws G projecting from the trolleyl head pin I so that the head which carries the trolley is capable of being depressed in a vertical plane which coincides with that of the trolley pole.' The head P has'a curved eX- tension arm Q projecting forwardly from it,

rand enters a curved tubular chamber R which projects downwardly from the under side of the trolley head socket I-I, the radius ters an obstruction, and return to its normal Y spiral spring, and a trolley head one end of position again. The ear piece F `is formed at one part namely above the axis ofy the trolley head socketzH with an abutment N which abuts against the base .of the space betweenthe two jaws G and forms a stop to prevent the collar or shoulder M or the spring L comingl out ofthe chamber R. f We declare .that what We claim is :A-V Y 1. In an overhead trolley or collector, the combination of a trolley head socket having a curved tubular chamber supplied with a which, is hingedfto the trolley head socket while lower down it has a curved'arm which enters the curved tubular chamber and bears lagainst thel spring.l

2. vIn an overhead trolley or collector, the combination of a trolleyrrhead socket having a curved tubular chamber supplied with a spiral spring, and a trolleyl head provided with va socket'in which the trolley pillar swivels and a webmember projecting `forwardly and upwardly from the said socket, the upper portion of the said web being hinged to the end ofthe trolley head socket while lower down it has a curved armwhich bears againstthe spiral spring. c

3. In an overhead trolley or collector, in which the trolley Vhead is formed' with a socket inwhich a trolleyforkswivelsLthe combinationwith the trolley head of afor wardly and upwardly projecting member the upper part of which is pivoted tothe 5 trolley head socket, while lower .down it is provided with acurved arm which bears against the spring contained within the curved' tubular extension chamber `projects ing downwardly from the under side of the A trolley head socket, such spring supporting the trolley pillarsocket normal position while admitting vof it yielding a little when the trolley strikes an obstruction.Y Y

4. In an overhead trolley or collector, l combination ofa trolley head socket having a curved tubular chamber supplied( with a spiral spring, a trolley ahead.- one end of which is hingedto the trolley head'sock'et by means of an ear piece; on one part entering i between two jawsonlthe other part and pivo-Y oted together'by amhinge in, anda nose piece adapted. to abutvagalns't the base of the space between theftwojaws to, forma sto i f v n witness whereof, ywe have hereunto signed our names this 17th day of May,"l921, in the presence oftwo subscribing witnesses. i c QTHOMAS BLANEY.

VDAVID VVILLIAdl/IS.` ,Y Witnesses:;

JAS. c. `Moena Y J. MCLCHLAN. 

